Elucidating the oxide growth mechanism on platinum at the cathode in PEM fuel cells
Literature Information
Erin L. Redmond, Brian P. Setzler, Faisal M. Alamgir, Thomas F. Fuller
Simulations of platinum oxidation in literature have yet to fully replicate an experimental cyclic voltammogram. In this manuscript a mechanism for platinum oxidation is proposed based upon the results of in operando X-ray absorption spectroscopy, where it was found that PtO2 is present at longer hold times. A new method to quantify extended X-ray absorption fine structure data is presented, and the extent of oxidation is directly compared to electrochemical data. This comparison indicated that PtO2 was formed at the expense of an initial oxide species. From previous literature studies it can be concluded that the rate of platinum oxidation is not a function of only potential and coverage. To that end, the concept of a heterogeneous oxide layer was introduced into the model, whereby place-exchanged PtO2 structures of varying energy states are formed through a single transition state. This treatment allowed, for the first time, the simulation of the correct current–potential behavior at varying scan rates and upper potential limits.
Related Literature
Delayed photodissociation of the tin cluster Sn22−
Alexander Jankowski, Paul Fischer, Klavs Hansen, Lutz Schweikhard
DOI: 10.1039/D3CP04476A
X-ray induced ultrafast charge transfer in thiophene-based conjugated polymers controlled by core-hole clock spectroscopy
Nicolas Velasquez, Fernanda B. Nunes, Jessica B. Martins, Denis Céolin, Laure Fillaud, Ralph Püttner, Maria Novella Piancastelli, Michael Odelius, Marcella Iannuzzi
DOI: 10.1039/D3CP04303G
Kinetic features of solvent extraction by N,O-donor ligands of f-elements: a comparative study of diamides based on 1,10-phenanthroline and 2,2′-bipyridine
Ekaterina A. Konopkina, Alexander V. Gopin, Anton S. Pozdeev, Maria G. Chernysheva, Paulina Kalle, Elizaveta A. Pavlova, Stepan N. Kalmykov, Vladimir G. Petrov, Nataliya E. Borisova, Alexander A. Guda, Petr I. Matveev
DOI: 10.1039/D3CP05081E
Energy transfer from two luteins to chlorophylls in light-harvesting complex II study by using exciton models with phase correction
Jiarui Li, Tao Zeng, Zexing Qu, Yu Zhai, Hui Li
DOI: 10.1039/D3CP05278H
H2 formation from the E2–E4 states of nitrogenase
Hao Jiang, Ulf Ryde
DOI: 10.1039/D3CP05181A
Composition dependence of X-ray stability and degradation mechanisms at lead halide perovskite single crystal surfaces
Alberto García-Fernández, Stefania Riva, Håkan Rensmo
DOI: 10.1039/D3CP05061K
Sufficient driving force for quinoidal isoindigo-based diradicaloids with tunable diradical characters
Li Shen, Xiaobo Gao, Zhanqing Chang, Changhao Zhang, Yue Li, Jitao Lu, Qingguo Meng, Qian Wu
DOI: 10.1039/D3CP05199D
The single metal atom (Ni, Pd, Pt) anchored on defective hexagonal boron nitride for oxidative desulfurization
Naixia Lv, Hongshun Ran, Jinrui Zhang, Jie Yin, Yuan Zhang, Hongping Li, Linhua Zhu
DOI: 10.1039/D3CP04963A
You might also like
How should waste containing N-Methoxy-N-methyl-1,3-thiazole-5-carboxamide (CAS: 898825-89-3) be handled?
Waste containing N-Methoxy-N-methyl-1,3-thiazole-5-carboxamide (CAS: 898825-89-3...
How should N-(4-Biphenylyl)dibenzo[b,d]furan-4-amine (CAS: 1318338-47-4) be stored?
N-(4-Biphenylyl)dibenzo[b,d]furan-4-amine should be stored in a tightly sealed c...
What is the market or research trend for 3-Acetamido-5-amino-2,4,6-triiodobenzoic acid (CAS: 1713-07-1)?
The market for 3-Acetamido-5-amino-2,4,6-triiodobenzoic acid (CAS: 1713-07-1) is...
How should Benzyl 2-O-acetyl-3,4,6-tri-O-benzyl-beta-D-galactopyranoside (CAS: 61820-03-9) be stored?
Benzyl 2-O-acetyl-3,4,6-tri-O-benzyl-beta-D-galactopyranoside (CAS: 61820-03-9) ...
What regulatory guidelines apply to 2-Ethylpiperazine dihydrochloride (CAS: 438050-52-3)?
2-Ethylpiperazine dihydrochloride (CAS: 438050-52-3) is regulated under the Glob...
What regulatory guidelines apply to 1,1'-[1,3-Phenylenebis(methylene)]bis(3-methyl-1H-pyrrole-2,5-dione) (CAS: 119462-56-5)?
1,1'-[1,3-Phenylenebis(methylene)]bis(3-methyl-1H-pyrrole-2,5-dione) (CAS: 11946...
Are there alternatives to 5-Fluoro-2-(1-pyrrolidinyl)pyridine (CAS: 1287217-79-1) in synthesis?
Several alternatives can be used in the synthesis of 5-Fluoro-2-(1-pyrrolidinyl)...
What precautions should be taken when handling 1-((2R,3R,4R,5R)-5-((bis(4-methoxyphenyl)(phenyl)methoxy)methyl)-4-hydroxy-3-methoxytetrahydrofuran-2-yl)-5-methylpyrimidine-2,4(1H,3H)-dione (CAS: 153631-19-7)?
Proper personal protective equipment (PPE) must be worn when handling this compo...
What precautions should be taken when handling 6-Bromoimidazo[1,2-a]pyridin-8-amine (CAS: 676371-00-9)?
When handling 6-Bromoimidazo[1,2-a]pyridin-8-amine, it is important to wear appr...
Are there alternatives to (2S,4R)-4-(4-Nitrobenzyl)pyrrolidine-2-carboxylic acid hydrochloride (CAS: 1049740-22-8) in synthesis?
Alternatives to (2S,4R)-4-(4-Nitrobenzyl)pyrrolidine-2-carboxylic acid hydrochlo...
Source Journal
Physical Chemistry Chemical Physics

Physical Chemistry Chemical Physics (PCCP) is an international journal co-owned by 19 physical chemistry and physics societies from around the world. This journal publishes original, cutting-edge research in physical chemistry, chemical physics and biophysical chemistry. To be suitable for publication in PCCP, articles must include significant innovation and/or insight into physical chemistry; this is the most important criterion that reviewers and Editors will judge against when evaluating submissions. The journal has a broad scope and welcomes contributions spanning experiment, theory, computation and data science. Topical coverage includes spectroscopy, dynamics, kinetics, statistical mechanics, thermodynamics, electrochemistry, catalysis, surface science, quantum mechanics, quantum computing and machine learning. Interdisciplinary research areas such as polymers and soft matter, materials, nanoscience, energy, surfaces/interfaces, and biophysical chemistry are welcomed if they demonstrate significant innovation and/or insight into physical chemistry. Joined experimental/theoretical studies are particularly appreciated when complementary and based on up-to-date approaches.










![4-Chloro-2-{[(2-chlorophenoxy)acetyl]amino}benzoic acid structure 4-Chloro-2-{[(2-chlorophenoxy)acetyl]amino}benzoic acid structure](https://static.chemtradehub.com/structs/351/351424-20-9-9467.webp)



